Problem with 3.3.0-rc1+: Target filesystem cannot find /sbin/init

Problem with 3.3.0-rc1+: Target filesystem cannot find /sbin/init

[Swapnil Pimpale]

I can successfully boot into Ubuntu 11.10 (3.0.0-14-generic-pae) with
a btrfs root filesystem and an ext2 /boot partition.
But when I installed the latest vanilla (3.3.0-rc1+) and booted into
it, the first time the system froze.
Next time onwards, I get the following error every time:

[   0.427443] [drm:i915_init]  *ERROR* drm/i915 cannot work without
intel_agp module!
mount: mounting udev on /dev failed: No such device
W: devtmpfs not available, falling back to tmpfs for /dev
mount: mounting /dev/disk/by-uuid/f43fdd7a-8ad7-4e96-ab1c-14ba82a4324d
on /root failed: No such device
mount: mounting /dev on /root/dev failed: No such file or directory
mount: mounting /sys on /root/sys failed: No such file or directory
mount: mounting /proc on /root/proc failed: No such file or directory
Target filesystem doesn't have requested /sbin/init.
No init found. Try passing init= bootarg.

BusyBox v1.18.4 (Ubuntu 1:1.18.4-2ubuntu2) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs)

I compiled the kernel with default configuration.
The output of "mount -l" is:

/dev/sda8 on / type btrfs (rw,subvol=@)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
/dev/sda8 on /home type btrfs (rw,subvol=@home)
/dev/sda9 on /boot type ext2 (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc
(rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/swapnil/.gvfs type fuse.gvfs-fuse-daemon
(rw,nosuid,nodev,user=swapnil)

The output of "fdisk -l" is:

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x10000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *          63      433754      216846    6  FAT16
/dev/sda2          434176    21155839    10360832    7  HPFS/NTFS/exFAT
/dev/sda3        21155840   271378943   125111552    7  HPFS/NTFS/exFAT
/dev/sda4       271382526   976773119   352695297    f  W95 Ext'd (LBA)
/dev/sda5       271382528   481097727   104857600    7  HPFS/NTFS/exFAT
/dev/sda6       481099776   690814975   104857600    7  HPFS/NTFS/exFAT
/dev/sda7       690817024   898484223   103833600    7  HPFS/NTFS/exFAT
/dev/sda8       900534272   976773119    38119424   83  Linux
/dev/sda9       898486272   900532223     1022976   83  Linux

Partition table entries are not in disk order

I have the following entries in /boot/config-3.3.0-rc1+
#
# Graphics support
#
CONFIG_AGP=y
# CONFIG_AGP_ALI is not set
# CONFIG_AGP_ATI is not set
# CONFIG_AGP_AMD is not set
CONFIG_AGP_AMD64=y
CONFIG_AGP_INTEL=y

CONFIG_DRM=y
CONFIG_DRM_I915=y

The ouput of "lspci" is:
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 18)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16
Root Port (rev 18)
00:16.0 Communication controller: Intel Corporation 5 Series/3400
Series Chipset HECI Controller (rev 06)
00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset
USB2 Enhanced Host Controller (rev 06)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset
High Definition Audio (rev 06)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI
Express Root Port 1 (rev 06)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI
Express Root Port 2 (rev 06)
00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI
Express Root Port 4 (rev 06)
00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI
Express Root Port 5 (rev 06)
00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI
Express Root Port 6 (rev 06)
00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset
USB2 Enhanced Host Controller (rev 06)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC
Interface Controller (rev 06)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series
Chipset 4 port SATA AHCI Controller (rev 06)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus
Controller (rev 06)
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400
Series Chipset Thermal Subsystem (rev 06)
02:00.0 VGA compatible controller: ATI Technologies Inc M92 [Mobility
Radeon HD 4500/5100 Series]
02:00.1 Audio device: ATI Technologies Inc RV710/730
04:00.0 Network controller: Broadcom Corporation BCM43224 802.11a/b/g/n (rev 01)
07:00.0 SD Host controller: Ricoh Co Ltd MMC/SD Host Controller (rev 01)
07:00.1 System peripheral: Ricoh Co Ltd Memory Stick Host Controller (rev 01)
07:00.2 System peripheral: Ricoh Co Ltd Device e852 (rev 01)
07:00.3 FireWire (IEEE 1394): Ricoh Co Ltd FireWire Host Controller (rev 01)
09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath
Architecture Generic Non-core Registers (rev 05)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath
Architecture System Address Decoder (rev 05)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05)

--Swapnil

Re: Problem with 3.3.0-rc1+: Target filesystem cannot find /sbin/init

[Fajar A. Nugraha]

On Sun, Jan 22, 2012 at 7:21 PM, Swapnil Pimpale <swapnil.pict@gmail.co=
m> wrote:
> I can successfully boot into Ubuntu 11.10 (3.0.0-14-generic-pae) with
> a btrfs root filesystem and an ext2 /boot partition.
> But when I installed the latest vanilla (3.3.0-rc1+) and booted into

where did you get the kernel from? kernel.org snapshot? git? third
party package?

> it, the first time the system froze.
> Next time onwards, I get the following error every time:
>
> [ =A0 0.427443] [drm:i915_init] =A0*ERROR* drm/i915 cannot work witho=
ut
> intel_agp module!
> mount: mounting udev on /dev failed: No such device
> W: devtmpfs not available, falling back to tmpfs for /dev
> mount: mounting /dev/disk/by-uuid/f43fdd7a-8ad7-4e96-ab1c-14ba82a4324=
d
> on /root failed: No such device

Do you know how to use your own costom kernel? That error is common
when a driver is missing (i.e. not built-in, and not included in
initrd). The easiest way to test that is to look at what's in
/proc/partitions and /dev/disk/by-id during normal system boot (I
assume you still have the old, working Ubuntu kernel?) and during
failed boot when you're dropped to busybox. If your root device
(sda8?) is not on /proc/partitions, then it's definitely block device
driver problem.

--=20
=46ajar
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Re: Problem with 3.3.0-rc1+: Target filesystem cannot find /sbin/init

[Swapnil Pimpale]

The problem is solved.
Turns out btrfs is disabled by default.

On Sun, Jan 22, 2012 at 5:59 PM, Fajar A. Nugraha <list@fajar.net> wrot=
e:
> On Sun, Jan 22, 2012 at 7:21 PM, Swapnil Pimpale <swapnil.pict@gmail.=
com> wrote:
>> I can successfully boot into Ubuntu 11.10 (3.0.0-14-generic-pae) wit=
h
>> a btrfs root filesystem and an ext2 /boot partition.
>> But when I installed the latest vanilla (3.3.0-rc1+) and booted into
>
> where did you get the kernel from? kernel.org snapshot? git? third
> party package?
>
>> it, the first time the system froze.
>> Next time onwards, I get the following error every time:
>>
>> [ =A0 0.427443] [drm:i915_init] =A0*ERROR* drm/i915 cannot work with=
out
>> intel_agp module!
>> mount: mounting udev on /dev failed: No such device
>> W: devtmpfs not available, falling back to tmpfs for /dev
>> mount: mounting /dev/disk/by-uuid/f43fdd7a-8ad7-4e96-ab1c-14ba82a432=
4d
>> on /root failed: No such device
>
> Do you know how to use your own costom kernel? That error is common
> when a driver is missing (i.e. not built-in, and not included in
> initrd). The easiest way to test that is to look at what's in
> /proc/partitions and /dev/disk/by-id during normal system boot (I
> assume you still have the old, working Ubuntu kernel?) and during
> failed boot when you're dropped to busybox. If your root device
> (sda8?) is not on /proc/partitions, then it's definitely block device
> driver problem.
>
> --
> Fajar

--Swapnil
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